Benjamin



(No Model.) I

' B. T. BABBITT.

P1100388 0P EXTRAG'TING GLYGERINE PROM SALT SO-AP LYE. N0. 256,614. IPatented Apr.18,1882.

UNITED STATES PATENT OFFICE.

BENJAMINT. BABBITT, OF NEW YORK, N. Y.

PROCESS OF EXTRACTING GLYCERINE FROM SALT SOAP-LYE.

SPECIFICATION forming part of 'Letters Patent No. 256,614, dated April18, 1882.

Application filed December 6, 1881. (No model.)

To all whom it may concern:

Be it known that I, BENJAMIN T. BABBITT, of the city of New York, in thecounty and State of New York, have invented a certain new and ImprovedProcess of Extracting Glycerine from Soap-Lycs, of which the followingis a specification. I

It is well known that the salt-lyes produced in the ordinary process ofsoap-making are rich in glycerine; but the extraction of the glycerinehas heretofore been attended with considerable difficulty.

My improved process consists in atomizing or spraying the lye by meansof superheated steam in a closed vessel, wherein the salt isdeposited,while the spray is conducted through a condenser, and theliquid resultingfrom condensation is filtered and subsequently subjectedto heat to evaporate the water.

The accompanying drawing represents a sectional view of an apparatus forcarrying out my invention.

A designates a closed tank or vessel,which may be made of any suitablematerial, and which should be strong enough to resist a light internalpressure-say about two or three pounds to the square inch.

. B designates a pipe through which the'lye enters the tank or vessel A,and O designates a pipe through which steam, superheated to atemperature of about five hundred and fifty degrees (550) Fahrenheit,enters the tank or vessel A under control of the cock or valve b.

The two pipes B and G are provided with atomizer-nozzles B G, which mayhe flattened to give them greater width,and which may be slitted orperforated with line holes. The steam escaping through the nozzle 0draws the lye through the pipe B and nozzle B and atomizes it, orconverts it into spray, and the salt of the lye is thereby freed fromthe liquid and deposited in the tank A. The said tank is provided with asuitable man-hole, A,

through which access can be had to the interior for removing the saltdeposited therein.

D designates a tank or vat, which may be made of wood, and which hasarranged within it a condenser-coil, D. This tank is kept filled withwater, and the atomized liquid or spray passes from the tank or vessel Aby a pipe, D through the coil D, and the liquid resulting fromcondensation escapes from the coil under control of the valve 0.

E designates a filter, which may consist of a wooden or other tank orvat, having a filling composed of felt at and wood or animal charpluswater contained in the liquid, and the glycerine resulting from suchevaporation may be drawn off through the outlet-pipe H.

The apparatus which I employ is very simple and may be constructed atsmall cost, and by my process I overcome thedifficulties which have beenheretofore experienced in extracting glycerine from salt soap-lyes.

What I claim as my invention, and desire to secure by Letters Patent,is-

I. In the process of extraetin g glycerine from soap-lyes, the atomizingor spraying of the lyes by superheated steam, substantially asspecified.

2. The process of extracting glycerine from soap-lyes, consisting infirst atomizingor spraying the lyes by means of superheated steam, nextcondensing the spray, next filtering the liquid resulting fromcondensation, and finally evaporating the water contained in the liquid,

substantially as specified.

B. T. RABBIT I.

Witnesses:

HENRY T. BROWN, '1. J. KEANE.

